Re: [FFmpeg-devel] [PATCH 2/2] avcodec/videotoolboxenc: refactor dump encoder name

["mypopy@gmail.com" <mypopy@gmail.com>]

On Sat, Nov 25, 2023 at 12:06 PM Zhao Zhili <quinkblack@foxmail.com> wrote:
>
> From: Zhao Zhili <zhilizhao@tencent.com>
>
> ---
>  libavcodec/videotoolboxenc.c | 65 +++++++++++++++++++++---------------
>  1 file changed, 38 insertions(+), 27 deletions(-)
>
> diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
> index b8a07e4e44..fbd33fd3f9 100644
> --- a/libavcodec/videotoolboxenc.c
> +++ b/libavcodec/videotoolboxenc.c
> @@ -280,6 +280,41 @@ typedef struct VTEncContext {
>      int max_ref_frames;
>  } VTEncContext;
>
> +static int vt_dump_encoder(AVCodecContext *avctx)
> +{
> +    VTEncContext *vtctx = avctx->priv_data;
> +    CFStringRef encoder_id = NULL;
> +    int status;
> +    CFIndex length, max_size;
> +    char *name;
> +
> +    status = VTSessionCopyProperty(vtctx->session,
> +                                   compat_keys.kVTCompressionPropertyKey_EncoderID,
> +                                   kCFAllocatorDefault,
> +                                   &encoder_id);
> +    // OK if not supported
> +    if (status != noErr)
> +        return 0;
> +
> +    length = CFStringGetLength(encoder_id);
> +    max_size = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
> +    name = av_malloc(max_size);
> +    if (!name) {
> +        CFRelease(encoder_id);
> +        return AVERROR(ENOMEM);
> +    }
> +
> +    CFStringGetCString(encoder_id,
> +                       name,
> +                       max_size,
> +                       kCFStringEncodingUTF8);
> +    av_log(avctx, AV_LOG_DEBUG, "Init the encoder: %s\n", name);
> +    av_freep(&name);
> +    CFRelease(encoder_id);
> +
> +    return 0;
> +}
> +
>  static int vtenc_populate_extradata(AVCodecContext   *avctx,
>                                      CMVideoCodecType codec_type,
>                                      CFStringRef      profile_level,
> @@ -1176,33 +1211,9 @@ static int vtenc_create_encoder(AVCodecContext   *avctx,
>      }
>  #endif
>
> -    // Dump the init encoder
> -    {
> -        CFStringRef encoderID = NULL;
> -        status = VTSessionCopyProperty(vtctx->session,
> -                                       compat_keys.kVTCompressionPropertyKey_EncoderID,
> -                                       kCFAllocatorDefault,
> -                                       &encoderID);
> -        if (status == noErr) {
> -            CFIndex length   = CFStringGetLength(encoderID);
> -            CFIndex max_size = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
> -            char *name       = av_malloc(max_size);
> -            if (!name) {
> -                CFRelease(encoderID);
> -                return AVERROR(ENOMEM);
> -            }
> -
> -            CFStringGetCString(encoderID,
> -                               name,
> -                               max_size,
> -                               kCFStringEncodingUTF8);
> -            av_log(avctx, AV_LOG_DEBUG, "Init the encoder: %s\n", name);
> -
> -            av_freep(&name);
> -        }
> -        if (encoderID != NULL)
> -            CFRelease(encoderID);
> -    }
> +    status = vt_dump_encoder(avctx);
> +    if (status < 0)
> +        return status;
>
>      if (avctx->flags & AV_CODEC_FLAG_QSCALE && !vtenc_qscale_enabled()) {
>          av_log(avctx, AV_LOG_ERROR, "Error: -q:v qscale not available for encoder. Use -b:v bitrate instead.\n");
> --
> 2.42.0
>
Patchset looks good for if pass the build
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